
@keyframes ant {
  from {stroke-dashoffset: 0%;}
  from {stroke-dashoffset: 100%;}

}

.bund{
  text-align: center;
  .btns{
    height:30px;
    line-height: 40px;
    text-align: center;
  }
}
svg{
  border: 1px solid #ddd;
  position: absolute;
  top:150px;
  left:10%;
  width:80%;
  height:70%;
  margin: 0 auto;
  .focused .line{
    stroke-dasharray:10;
    stroke-dashoffset: 0;
    animation: ant 20s linear infinite;
  }
}